SK Telecom Breach Incident Score: Analysis & Impact (SK-4732347112025)

In this Rankiteo incident briefing, we review the SK Telecom breach identified under incident ID SK-4732347112025.

The analysis begins with a detailed overview of SK Telecom's information like the linkedin page: https://www.linkedin.com/company/sk-telecom, the number of followers: 47947, the industry type: Telecommunications and the number of employees: 7230 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 253 and after the incident was 194 with a difference of -59 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on SK Telecom and their customers.

SK Telecom (SKT) recently reported "SK Telecom Data Breach and Compensation Dispute", a noteworthy cybersecurity incident.

SK Telecom (SKT) rejected a proposal from the Personal Information Dispute Mediation Committee to compensate subscribers affected by a data breach.

The disruption is felt across the environment, and exposing True.

In response, and began remediation that includes Proactive compensation measures and efforts to prevent recurrence, and stakeholders are being briefed through Public statement rejecting the mediation committee's proposal.

The case underscores how Ongoing dispute; affected subscribers may file lawsuits, with advisories going out to stakeholders covering SKT statement on rejection of mediation proposal.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (85%), supported by evidence indicating personal information was compromised, 3,998 subscribers... data breach. Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with moderate to high confidence (75%), supported by evidence indicating data breach with personal information... compromised but no explicit exfiltration method described. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (10%), supported by evidence indicating no direct evidence, but data breach implies unauthorized access with potential for misuse, Resource Hijacking (T1496) with lower confidence (20%), supported by evidence indicating no explicit hijacking, but personal information was compromised suggests misuse risk, and Data Manipulation (T1659) with lower confidence (15%), supported by evidence indicating no direct manipulation evidence, but breach implies unauthorized interaction with data. Under the Initial Access tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating no explicit vector, but telecom breaches often involve abused credentials (implied by lack of other details) and Exploit Public-Facing Application (T1190) with moderate confidence (65%), supported by evidence indicating no explicit vulnerability, but telecom provider breach suggests possible web/app exploitation. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.